Sonic Man is one of the three Robot Masters from the Mega Man computer game for DOS. He is part of the CRN series of Robot Masters.

Sonic Man is an aquatic Robot Master who uses small sonar wave attacks that are hard to see. He also attacks with three small mines that he drops directly onto Megaman. His design is based somewhat off that of Bubble Man and swims the same way. He is weak against Dyna Man's Nuclear Detonator weapon because of the rapid change of pressure in the water in causes. Defeating him gives you the sonic wave weapon. 

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